Tsudzuki M, Kusano S, Wakasugi N, Morioka H, Esaki K
Department of Laboratory Animal Science, College of Agriculture, University of Osaka Prefecture, Japan.
Jikken Dobutsu. 1992 Jan;41(1):25-31.
A plumage color mutant, dotted white (DTW), of Japanese quail is described in this paper. The adult DTW mutant shows white plumage with a small colored spot on the head and/or back. The pigmented spots invariably appear on the dorsal region and never on the ventral region of the body. Some birds lack colored spots and show pure white plumage. The chick of the DTW mutant shows cream yellow plumules similar to those of the White Leghorn chick. Colored spots also exist as in adults, and its coloration is diluted light brown. The feathers on colored spots of the adult show diluted pigmentation as compared with wild-type feathers. In addition, the wheat-straw colored shaft streak is extremely narrow and the transversal bars are missing. The DTW mutant is thought to be genetically different from previously reported similar mutants, brown-splashed white, panda, and recessive white. Genetic analyses revealed that the DTW mutant plumage is controlled by an autosomal recessive gene. The gene symbol dtw is provisionally proposed, since there remains a possibility that the DTW character may be allelic to some of the similar mutant characters mentioned above.
本文描述了日本鹌鹑的一种羽色突变体——点状白色（DTW）。成年DTW突变体表现为白色羽毛，头部和/或背部有一个小的有色斑点。有色斑点总是出现在身体的背部区域，而从未出现在腹部区域。一些鸟没有有色斑点，表现为纯白色羽毛。DTW突变体的雏鸟表现出与白来航雏鸡相似的乳黄色绒毛。有色斑点也与成年鸟一样存在，其颜色为稀释的浅棕色。与野生型羽毛相比，成年鸟有色斑点上的羽毛色素沉着较淡。此外，麦秸色的羽轴纹极其狭窄，横纹缺失。DTW突变体被认为在遗传上与先前报道的类似突变体——褐斑白、熊猫和隐性白不同。遗传分析表明，DTW突变体的羽毛由一个常染色体隐性基因控制。由于DTW性状仍有可能与上述一些类似突变性状等位，因此暂拟基因符号dtw。
